Lockup on Kernel Exec Fault in powerpc/mm
Summary
GSD-2021-1001295: powerpc/mm: Fix lockup on kernel exec fault. Affects Kernel versions >= d3ca587404b36943b02df87406054ce73cc49500, < d2e52d4664097a6c1f591d869ec594bd7a0d4925. No fix is published. How to fix ↓
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Background
The powerpc/mm module is a component of the Linux Kernel that handles memory management for PowerPC architecture. It is responsible for managing virtual memory, page tables, and memory protection. The vulnerability described in this report can lead to a lockup when a kernel exec fault occurs.
Vulnerability Detail
The vulnerability arises from a flaw in the powerpc/mm module of the Linux Kernel. When a kernel exec fault is encountered, the system can become unresponsive and enter a lockup state. This can potentially be exploited by an attacker to cause a denial-of-service (DoS) condition. The vulnerability was introduced in version v4.14 of the Linux Kernel and is fixed in version v5.10.51.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
The lockup on kernel exec fault vulnerability in powerpc/mm module of the Linux Kernel can lead to a system lockup and potential denial-of-service (DoS) condition. It is recommended to update the Linux Kernel to version v5.10.51 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a system lockup when a kernel exec fault occurs, potentially resulting in a denial-of-service (DoS) condition.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground and it will alert you if the vulnerability is present.
No known exploit for this vulnerability has been reported at this time.
The recommended mitigation is to update the Linux Kernel to version v5.10.51 or later.
You can refer to the vulnerability details in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001295.json) for more information.
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